Extract.quad
From spatstat v1.61-0
by Adrian Baddeley
Subset of Quadrature Scheme
Extract a subset of a quadrature scheme.
Usage
# S3 method for quad
[(x, ...)
Arguments
- x
A quadrature scheme (object of class
"quad"
).- …
Arguments passed to
[.ppp
to determine the subset.
Details
This function extracts a designated subset of a quadrature scheme.
The function [.quad
is a method for [
for the
class "quad"
. It extracts a designated subset of a quadrature
scheme.
The subset to be extracted is determined by the arguments …
which
are interpreted by [.ppp
. Thus it is possible to take the
subset consisting of all quadrature points that lie inside a
given region, or a subset of quadrature points identified by
numeric indices.
Value
A quadrature scheme (object of class "quad"
).
See Also
Examples
# NOT RUN {
Q <- quadscheme(nztrees)
W <- owin(c(0,148),c(0,95)) # a subwindow
Q[W]
# }
Community examples
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